Hi Michael,

Does this mean, that mean, that we have some kind of transaction logs
where we will be able to "walk to" a specific time to restore a
specific state?

the rbd journal records all changes to the primary rbd image which are asynchronously applied to the remote image. There is no way to jump to a specific point in time using the journal entries, they are deleted as soon as the replay has been acked. To actually walk back to a point in time there are rbd snapshots. They allow you to roll back an image to a specific snapshot.

Regards,
Eugen


Zitat von Ml Ml <[email protected]>:

Hello List,

when reading:
  https://docs.ceph.com/docs/master/rbd/rbd-mirroring/
it says: (...)Journal-based: This mode uses the RBD journaling image
feature to ensure point-in-time, crash-consistent replication between
clusters(...)

Does this mean, that mean, that we have some kind of transaction logs
where we will be able to "walk to" a specific time to restore a
specific state?

Like: https://blog.sleeplessbeastie.eu/2016/02/29/how-to-perform-postgresql-point-in-time-recovery/

Thanks,
Michael
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